Stack-cooler for blast-furnaces.



APPLICATION FILED AUG 4, 1911.

Patented June 30, 191% LJLQLFUL INVENTOH WITNESSES LUTHER L. KNOX, OFNILES, OHIO, ASSIGNOR TO KEYSTONE BRONZE COMPANY, OF PITTSBURGH,PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

STACK-COOLER FOR BLAST-FURNACES.

Specification of Letters Patent.

Application filed August 4', 1911.

To all whom it may concern:

Be it known that I, LUTHER L. KNOX, of Niles, in the county of Trumbulland State of Ohio, have invented a new and useful Improvement inStack-Coolers for Blast- Furnaces, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming .4 and 5 are, respectively, cross sections of Figs. 2and 3, and Figs. 6 and 7 are detail views showing different forms of thewater discharge pipe.

My invention has relation to coolers for the stack walls of blastfurnaces; and is designed to provide a cooler having means of improvedcharacter for introducing the cooling liquid thereto and for maintainingan effective circulation of such liquid therein. In the drawings, thenumeral 2 designates a portion of the stack wall of a blast furnace and3 my improved coolers. These coolers are preferably made of a length(measured circumferentially of the furnace), considerably greater thantheir width (measured in the direction of the thickness of the stackwall) and are preferably formed with the convexed outer sides at andconcaved inner sides 5. They are hollow, providing an inclosed watercontaining cham her 6. To supply the cooling water a pipe 7 is provided.This pipe is provided at its outer end with means for connection with asuitable supply pipe 8 and extends inwardly into the chamber of thecooler near one end thereof, and is thence bent to extend transversely,as shown at 9, the entire length 'of the cooler adjacent to theinnerwconcaved side 5 thereof, being provided with a plurality ofdischarge openings. These openings may be perforations, such as shown at10 in Figs. 6,or slots, such as shown at 11 in Fig. 7. These openingsdischarge the water directly against the inner surfaces of Patented Juneso, rein. Serial No. 642,338.

the side wall 5, which is the hottest portion of the cooler. The heatedwater rises to the upper portion of the cooler and esca es by an outletconnection 12, which preferably communicates with the chamber of thecooler at substantially the highest point thereof. A suitable blow-outor clean-out connection 13 may also be provided.

The coolers may be made in any suitable manner, as by shaped plates orsheets welded together at their edges, the water pipe being placed inclosed.

The invention provides a stack cooler having means for discharging thecooling water directly in contact with the portions thereof which arehottest, and insures the maintenance of a constant circulation of waterthrough the cooler. By placing the outlet at'the highest point, .theformation of steam pockets is avoided.

What I claim is:

l. A stack cooler for blast furnaces, comprising a hollow segmental bodyhaving sub-- stantially parallel upper and lower surfaces and having apipe extending into one end portion thereof to a point near its innerwall, and thence extending transversely of the body adjacent to saidinner wall to a point near the opposite end, the transverse arm of thepipe having therein a plurality of discharge openings, substantially asdescribed.

2. A stack cooler for blast furnaces, comprising a hollow. sheet metalbody of segmental form with substantially flat upper and lower surfacesand having a pipe extending radially into one end portion thereof to apoint adjacent to its inner wall and thence extending transverselyadjacent to sdch inner wall substantially the full length of the body,the transverse arm of the pipe having a plurality of. dischargeopenings, substantially as described.

In testimony whereof, I have hereunto set my hand.

LUTHER L. KNOX. Witnesses:

Jnssn B. 'HELLER, H. M. ConwiN.

position before the joints are

